Sunflower Driving Tool for Mountain and Road Bicycle Bowl Group Hanging Core Installer in Blue Aluminium Alloy with Stainless Steel Components, Compatible with 22.2mm, 25.4mm and 28.6mm Sizes
Sunflower Driving Tool for Bowl Group Hanging Core Installation on Mountain and Road Bicycles

Installing or replacing a bowl group hanging core on your bicycle can be a fiddly job, especially when you are not sure about size compatibility. This sunflower driving tool is built to fit the most common sizes used in the market: 22.2mm, 25.4mm, and 28.6mm. Its practical design helps you get the hanging core seated properly, saving time and reducing the risk of damage. Made from aluminium alloy with stainless steel components, it offers a good balance of light weight and strength for regular maintenance work.
Features and Construction

The sunflower driving tool is designed with a focus on straightforward functionality. Its construction uses two materials that each serve a clear purpose, and the tool is kept light for easy handling during repeated use.
Material and Build
The main body is crafted from aluminium alloy, which keeps the overall weight low. The working parts that contact the hanging core are made from stainless steel, providing durability and resistance to rust. The combination means the tool is both practical to carry around and capable of standing up to multiple installations without losing shape.
Size and Practical Fit
The tool is compatible with three diameter sizes: 22.2mm, 25.4mm, and 28.6mm. These cover the vast majority of bowl group hanging cores found on mountain bikes and road bicycles. The blue colour makes the tool easy to spot in a busy toolbox or workshop bench.
Uses and Placement

This tool is intended for bicycle maintenance, specifically the installation of bowl group hanging cores. It suits both DIY cyclists and professional mechanics who need a reliable way to fit and tighten these parts.
Event or Professional Use
In a bike repair shop, having a tool that fits multiple core sizes means fewer interruptions to find the right adapter. The aluminium alloy build keeps it light enough for extended use without causing hand fatigue, and the stainless steel parts ensure consistent performance on frequent jobs.
Everyday Home Use
For home mechanics working on their own mountain or road bicycle, this tool removes the guesswork from hanging core installation. Simply select the correct size, place the tool, and turn. The clear colour coding helps identify it quickly among other tools.
Benefits and Buying Value

Selecting the right installation tool can prevent damage to your bicycle's bowl group and save you time. This sunflower driving tool offers practical value through its material quality and size coverage.
Reuse and Low Maintenance
Because the tool is made from aluminium alloy and stainless steel, it does not require special care to stay in working condition. Wipe it clean after use and store it in a dry place. The stainless steel components resist corrosion, so the tool remains effective for years of periodic use.
Why Choose This Product
Instead of buying multiple single-size tools, this one unit covers three common diameters. The light weight (approximately 102g per set) makes it easy to add to your bicycle repair kit without adding noticeable bulk. It is a straightforward, functional tool that does exactly what it needs to do.


